Home / 15,216.40-20,994.79-8,927.56

Finding the Fourth Proportional to 15,216.40, 20,994.79 and 8,927.56

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Solution

The fourth proportional to 15,216.40, 20,994.79 and 8,927.56 is: 12,317.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.40 : 20,994.79 = 8,927.56 : x
  2. Step 2: Convert to fraction form
    15,216.40/20,994.79 = 8,927.56/x
  3. Step 3: Cross multiply
    15,216.40x = 20,994.79 × 8,927.56
  4. Step 4: Simplify right side
    15,216.40x = 187,432,097.80
  5. Step 5: Solve for x
    x = 187,432,097.80/15,216.40
  6. Step 6: Final answer
    x = 12,317.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.